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What are my environment variables? [closed]
... are environment variables stored?
How to set Shell Environment Variables
http://www.codecoffee.com/tipsforlinux/articles/030.html
Happy reading :-)
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How can I add comments in MySQL?
... */
here is an example: SELECT 1 /* this is an in-line comment */ + 1;
http://dev.mysql.com/doc/refman/5.0/en/comments.html
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SQL WITH clause example [duplicate]
... formats for simple and complex SQL SELECT queries.
For more information: http://www.brighthub.com/internet/web-development/articles/91893.aspx
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Laravel 4: how to “order by” using Eloquent ORM [duplicate]
...del you would have:
$posts = Post::idDescending()->get();
More info: http://laravel.com/docs/eloquent#query-scopes
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TokuMX vs. MongoDB 性能对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...能急剧下降。
Tokutek数据
带索引插入性能对比。
http://www.tokutek.com/2013/06/iibench-benchmark-tokumx-vs-mongodb/
以上为Tokutek的测试数据,下面为我测试的数据:
笔者实际测试
生产数据2亿多条导入测试
先建集合,创建3个索引...
PHP连接MySQL报错:Fatal error: Call to undefined function mysql_connec...
...安装配置方法:Apache+php+mysql在windows下的安装与配置图解(http://tech.163.com/06/0206/11/299AMBLT0009159K.html);
2.经过几次修改、测试,终于找到解决方法。
很简单,只要在httpd.conf文件里在LoadModule php5_module "c:/php/php5apache2_2.dll"下面追加...
错误解决:Xcode not set up properly. You may need to confirm the licens...
...
升级xcode 后 Qt 出问题了,google 找到了解决方法。
http://stackoverflow.com/questions/33728905/qt-creator-project-error-xcode-not-set-up-properly-you-may-need-to-confirm-t
~> Xcode 8
This problem occurs when command line tools are installed after Xcode is installed. What...
一款IP:端口监控工具 服务器端口监控工具[附源码] - C++ UI - 清泛IT社区...
...警(PC蜂鸣器、自定义wav文件)。
软件下载:http://www.tsingfun.com/html/2016/soft_0602/74.html
源码下载:
主要代码请参考:《mfc telnet 端口,代码实现、不调用telnet.exe》
表格采用GridCtrl(Demo源码):《MFC Grid control 2.27》
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Win7禁用休眠 减少C盘容量占用 - 脚本技术 - 清泛IT社区,为创新赋能!
...效。
傻瓜式终极解决方案:使用CCleaner工具进行清理。http://www.tsingfun.com/html/201 ... 5343_pro_green.html
C++字符串截断时中文的处理问题(中文被截断怎么处理?) - c++1y / stl - ...
...的第一个字节,否则是普通的ASCII字符。
具体请参考:http://www.tsingfun.com/html/2016/dev_0331/1335.html
当然,还有其他方式就是判断 > 127 或 < 0(即首bit为1,signed时值为负),道理也是一样,不过推荐上面的写法。
